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A Z06 Corvette is guaranteed to make 505 hp (not 400hp), and they generally run around 515hp. The Corvette is much lighter than the 911 turbo. It's even lighter than a Subura WRX STI. The 7.0 liter pushrod V8 engine in the Vette is lighter than the 3.8 liter flat 6 engine in the Carerra.
From Car and Driver, September 2006:
Z06 Corvette 505hp, 3186lbs, 1/4 mile, 11.7 seconds at 123mph, 0 to 150mph, 17.7 seconds, Papenburg track lap time, 1:15.85, skidpad conerning force in g's 1.01, braking 70mph - 0mph, 146 feet.
Porsche 911 Turbo 480hp, 3514 lbs, 11.7 seconds at 121mph, 0 to 150mph 19.1 seconds, Papenburg track lap time, 1:17.55, skidpad conerning force in g's 0.98, braking 70mph - 0mph, 151 feet.
With the engine at the rear and all wheel drive, the 911 is quicker to 60mph, 3.4 (911) versus 3.5 (z06). Gearing helps with 0 to 100mph 7.8 (911) versus 8.3 (z06), as the Z06 has taller gears, 60mph in 1st, 90mph in 2nd, 125mph in 3rd. In a rolling start from 5mph to 60mph, the Z06 is quicker, 4.0 (z06), versus 4.6 (911), more of a torque curve test since the driver isn't allowed to use the clutch to spin the tires and launch at higher rpms, turbo lag at lower rpms may be hurting the 911 as well here.
Regarding the top gear times, the "stig" is really different drivers, it's a standing start lap, and they don't do multiple runs to get a best or average time.
From Motor Trend, April 2006
Z06 - 505hp, 3150lbs
911 Carerra S - 355hp, 3275lbs. 380hp with X51 package. They tested with the 355hp version though.
Cayman S - 295hp, 3088lbs.
Laguna Seca lap times, 1:47.3 seconds (z06), 150.0 seconds (355hp Carerra), crashed (Cayman S). MT Figure 8, 24.9 seconds (z06), 25.3 seconds (Cayman S), 25.8 seconds (355hp Carerra).
Lemans 24 hours GT1 class
The Corvette C6.R has won 5 of the last 6 races.
price
In the USA, the Corvette Z06 is about $70,000 (USA), but in England, it's $133,822 (USA), or 60,000 pounds, so there must be a significant tariff on this car.
update - Boxster
Being a convertible, there's too much chassis flex for the Boxster in stock form to make a good track car. It needs a roll cage in order to get the chassis stiff enough, but then that's a modified car. The Cayman S, based on the Boxster, makes a better track car in stock form, but is still slower than the Z06, even on the MT figure 8 track which is very small and tight.
From Car and Driver, September 2006:
Z06 Corvette 505hp, 3186lbs, 1/4 mile, 11.7 seconds at 123mph, 0 to 150mph, 17.7 seconds, Papenburg track lap time, 1:15.85, skidpad conerning force in g's 1.01, braking 70mph - 0mph, 146 feet.
Porsche 911 Turbo 480hp, 3514 lbs, 11.7 seconds at 121mph, 0 to 150mph 19.1 seconds, Papenburg track lap time, 1:17.55, skidpad conerning force in g's 0.98, braking 70mph - 0mph, 151 feet.
With the engine at the rear and all wheel drive, the 911 is quicker to 60mph, 3.4 (911) versus 3.5 (z06). Gearing helps with 0 to 100mph 7.8 (911) versus 8.3 (z06), as the Z06 has taller gears, 60mph in 1st, 90mph in 2nd, 125mph in 3rd. In a rolling start from 5mph to 60mph, the Z06 is quicker, 4.0 (z06), versus 4.6 (911), more of a torque curve test since the driver isn't allowed to use the clutch to spin the tires and launch at higher rpms, turbo lag at lower rpms may be hurting the 911 as well here.
Regarding the top gear times, the "stig" is really different drivers, it's a standing start lap, and they don't do multiple runs to get a best or average time.
From Motor Trend, April 2006
Z06 - 505hp, 3150lbs
911 Carerra S - 355hp, 3275lbs. 380hp with X51 package. They tested with the 355hp version though.
Cayman S - 295hp, 3088lbs.
Laguna Seca lap times, 1:47.3 seconds (z06), 150.0 seconds (355hp Carerra), crashed (Cayman S). MT Figure 8, 24.9 seconds (z06), 25.3 seconds (Cayman S), 25.8 seconds (355hp Carerra).
Lemans 24 hours GT1 class
The Corvette C6.R has won 5 of the last 6 races.
price
In the USA, the Corvette Z06 is about $70,000 (USA), but in England, it's $133,822 (USA), or 60,000 pounds, so there must be a significant tariff on this car.
update - Boxster
Being a convertible, there's too much chassis flex for the Boxster in stock form to make a good track car. It needs a roll cage in order to get the chassis stiff enough, but then that's a modified car. The Cayman S, based on the Boxster, makes a better track car in stock form, but is still slower than the Z06, even on the MT figure 8 track which is very small and tight.
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